Bike Fitting Calculator

Welcome to Our Online Bike Fitting Guide!

If you’ve ever ridden the wrong size bike, you know how uncomfortable it can be to try to push down on too-close pedals or lean forward to reach faraway handlebars. With custom bikes from Zinn Cycles, we make that discomfort a thing of the past! Our bikes promise you a fit so perfect that you can’t wait to get out and get moving.

The leader of our movement, Lennard Zinn, is well-known for designing bikes that are customized to fit your exact measurements. His fitting methods ensure that any bike you purchase from us is comfortable from the wheels to the handlebars. Whether you ride on the road or climb up mountains, you’ll need a bike that is measured for your biking style as well as your body’s shape and size. Check out our complimentary bike fitting calculator to find the measurements you need.

Enter your measurements to see your ideal bicycle frame geometry.

Road

Road bikers need different measurements for their bicycles than mountain bikers do. Use our road bike fitting calculator to find out the right fit for this type of riding style. Let us know your measurements and the type of cyclist you areand we’ll give you the sizes you need for your stock crank, horizontal top tube, seat height, stem length, and more.

Fit Calculator Road

What kind of a rider are you?

Sternum To Floor (mm)
Arm (mm)
Inseam Length (mm)

 
Torso:  
Arm plus torso:  
Seat Tube Length (c. to top) w/ Stock Crank (165mm-180mm):  
Seat Tube Length (c. to top) w/ Ideal Crank:  
Horizontal Top Tube Length (c. to c.) :  
Seat Height Pedal Spindle to Saddle Top:  
Seat Ht. BB c. to Saddle Top w/ Ideal Crank:  
Seat Ht. BB c. to Saddle Top w/ Stock Crank:  
Stem Length:  
Ideal Crank Length:  
Stock Crank Length:  
BB Height w/ Ideal Crank:  
BB Height w/ Stock Crank:  
Bike Fit Calculators By Lennard Zinn, all rights reserved

Mountain

If you’re a mountain biker, tell us your arm, inseam, and sternum-to-floor measurements to discover the ideal sizes for every component of your bike. Our bike fitting calculator for mountain bikers also takes into account whether you’re a casual rider or a professional athlete to help you create the perfect bicycle.

Fit Calculator Mountain

What kind of a rider are you?

Choose your measurement units?

Sternum To Floor
Arm
Inseam Length

 
Torso:  
Arm plus torso:  
Seat Tube Length (c. to top) w/ Stock Crank (175mm):  
Seat Tube Length (c. to top) w/ Ideal Crank:  
Horizontal Top Tube Length (c. to c.) :  
Seat Height Pedal Spindle to Saddle Top:  
Seat Ht. BB c. to Saddle Top w/ Ideal Crank:  
Seat Ht. BB c. to Saddle Top w/ Stock Crank:  
Stem Length:  
Ideal Crank Length:  
Stock Crank Length:  
BB Height w/ Ideal Crank:  
BB Height w/ Stock Crank:  
Bike Fit Calculators By Lennard Zinn, all rights reserved

Personal Fitting from Zinn Cycles

Our bike size calculator is good enough to give you plenty of guidance before you purchase your bike, but you can always schedule an appointment with a pro to guarantee that you get exactly what you need. If you’d like to make a bike fitting appointment with our expert team for a personal fitting, that’s definitely possible! Simply fill out our online form below.

A fitting with Lennard Zinn is $300, but we’ll refund the fee if you end up buying your bike from us! Find the measurements you need with our online bike fitting guide to enjoy an amazing ride every time you get on your bike when you choose a professional fitting from the team at Zinn Cycles.

Are You Ready for Your Dream Bike?